EASA SIB CE-18-20: American Champion Aircraft Corporation 7 and 8 Series Aeroplanes - Electrical Power

What to do

Owners and operators of the affected American Champion 7 and 8 series airplanes should complete the installation of the electrical system updates described in ACAC Service Letter number 418. Maintenance manuals should be updated to include details of the circuit protection devices, and all alterations should be documented in the aircraft logbook by a certified technician. There is no specified compliance deadline, but timely action is recommended to mitigate risk.

Summary

The Special Airworthiness Information Bulletin American Champion Aircraft Corporation 7 and 8 Series Aeroplanes - Electrical Power addresses potential electrical system shorts that could cause fires in various 7 and 8 series airplanes manufactured by Aeronca, Bellanca, Champion, and American Champion Aircraft Corporation (ACAC). The affected models include multiple 7 and 8 series aircraft covered under Type Certificates A-759 and A21CE. This bulletin provides information on electrical system vulnerabilities and recommends safety improvements but does not mandate regulatory action.

What changed

This bulletin introduces awareness of electrical short circuit risks in the specified aircraft models and highlights the importance of incorporating ACAC Service Letter number 418, issued in 2001, which updates the electrical system with circuit protection devices. It does not impose new mandatory requirements but encourages operators to implement recommended electrical system modifications to reduce fire hazards.

Why it matters

This information is critical for aviation professionals because electrical shorts in these aircraft can lead to fires and in-flight engine stoppages, posing safety risks. Operators and maintenance personnel need to understand the potential hazards and the benefits of installing circuit protection to prevent electrical fires and ensure continued airworthiness. Compliance teams should note that while no airworthiness directive is issued, proactive measures can reduce risk and improve safety.